G85 Users : exposure lock when using back button focus?

Could anyone with a G85 (newest firmware) verify the following behaviour.

In custom menu:

Set AF/AE Lock to AF-ON

Set Shutter AF to OFF

Then half press shutter and see if the exposure locks, mine doesn't, and even if you try to map another function button to AEL that button just mirrors the function you programed the actual AEL button for (ie AF-ON)

My GX85 does not do this, it locks exposure on shutter half press when using back button focus and all my previous cameras either did this or gave the option to do this. As it stands there is no way to lock exposure and recompose when using back button focus, you can use exposure compensation to a point or touch AE but thats a bit of a pain.

You must be using one of the automated modes, I work in Manual Exp mode almost exclusively in both still and video. For me (on all the G series, GX series, and GH series) the back button (when configured to AF ON) does one single autofocus operation, locks focus, and switches automatically to MF. It remains in MF until I press the back button again (in which case it reverts to default half press of shutter for AF), change mode, or power down.

Because I'm already in Manual Exp mode, exposure is already locked at where I have it set. You might give Manual a try, once used to it it's pretty simple and quick to use.

Thanks, but at this time I am just trying to determine if there is a firmware bug, issue with my camera, or just a weird programming choice, as pretty much every other camera I have used that you can setup for back button focus at the least gives you the option to lock exposure with half press if the shutter.

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